ENS 46780

v t e ENS Event
13:21 Apr 23, 2011
Title	Valid Auxiliary Feedwater Pump Start While Cooling Down Reactor
Event Description	At 0921 [EDT] on 4/23/11, CNS Unit-1 received an auxiliary feedwater pump auto start due to low-low level in the 1B steam generator. The 1A auxiliary feedwater pump started and restored steam generator level to the normal operating band. A cooldown was in progress at the time of the event and the tagout isolated feedwater flow to the 1B steam generator. The licensee notified the NRC Resident Inspector. The states of North and South Carolina, and York, Gaston, and Mecklenburg Counties will be notified.

ENS 46780 +/-
Where
Catawba South Carolina (NRC Region 2)
Reporting

10 CFR 50.72(b)(3)(iv)(A), System Actuation
Time - Person (Reporting Time:+-0.73 h-0.0304 days <br />-0.00435 weeks <br />-9.99954e-4 months <br />)
Opened:	Donald Wisneiwski 12:37 Apr 23, 2011
NRC Officer:	Mark Abramovitz
Last Updated:	Apr 23, 2011
46780 - NRC Website
v • d • e

v t e Emergency Notification System
Catawba with 10 CFR 50.72(b)(3)(iv)(A), System Actuation
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